Setting Boundary Conditions and Values

The heated fin consists of an inverted “T” shape placed in a closed box. The only boundary specifications required for this analysis are wall thermal conditions.

Apply a fixed temperature of 343 K to the base of the solid fin to provide the heat source. Set the vertical sides of the fluid-containing box to a fixed temperature of 293 K. All other wall boundary conditions are considered to be adiabatic. Use a contact-type conducting boundary at the solid-fluid interface.

Start with the wall boundary definitions for the fluid region.

  1. Navigate to the Regions > Fluid > Boundaries > Vertical-Walls > Physics Conditions node.
  2. Select the Thermal Specification node and set Condition to Temperature.
    The temperature value for this boundary can now be set.
  3. Select the Vertical-Walls > Physics Values > Static Temperature node and set Value to 293 K.

    The conditions for the Horizontal-Walls boundary (upper and lower walls of the fluid region) can remain at the default adiabatic setting.

    You can now set the solid wall boundary conditions and values in a similar way to those of the fluid.

  4. Navigate to the Regions > Solid > Boundaries > Fin-Bottom > Physics Conditions node.
  5. Select the Thermal Specification node and set Condition to Temperature.
    The temperature value for this boundary can now be set.
  6. Select the Fin-Bottom > Physics Values > Static Temperature node and set Value to 343 K.
  7. Save the simulation.